| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 765 |
41.2%
|
| 2 | Between 30 minutes and 1 hour | 667 |
35.9%
|
| 3 | 1 to 3 hours | 351 |
18.9%
|
| 4 | More than 3 hours | 51 |
2.7%
|
| 99 | Do not know | 24 |
1.3%
|
| Sysmiss | 5 |